Feeding molten glass



Dec. 17, 1929. K, E; PEILER 1,739,519

FEEDING MOLTEN GLASS Filed Oct. 5l. 1925 l' ma 5 "27 2 MEMS In m9721607?j'arZ P95267 y day- Parental' Dec. 17, 192ev UNITED STATES PATENT OFFICEKARL" E. PEILEB, OF WEST HARTFORD, CONNECTICUT, ASSIGNOB TO HARTFORD-EIPIRE COMPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF DELAWAREmDING IOLTEN GLASS Application led October 31, 1925. Serial No. 68,019.

My invention relates to the art of feeding a supply of molten glass in aregular succession of similar mold charges.

One object of my invention is to impart to each mold charge apreliminary configuration appropriate to the contour of the mold cavityin which the lcharge is to be received, thereby minimizing unevenchilling of the glass and preventing the mold charge from unduedistortion or lapping when deposited in the mold. /V

More specifically, the object of my'l invention is to employ a cup forreceiving and shaping each mold charge prior to depositing it in themold, and to prevent contact between the mold charge and the cup byroviding, within the cup, a protective uid m which supports the glass inthe cup and prevents it from sticking to the cup in spots, as it wouldtend to do if the glass were allowed to come into direct contact withthe walls of the cup.

In carrying out my invention by the sipperatus disclosed herein, moltenglass ows either steadil or intermittently from an outlet, is receive ina partible cup, and is severed periodically by shears operating abovethe cup. As the shears cut, the halves of the cup separate and allow thelass to fall into a mold or upon a chute wlnch delivers it to the mold.If the flow of glass is constant, it may be regulated by an adjustableplug adj acent to the outlet, and if the flow is intermittent, aplunger, a pneumatic pulsator, or other suitable means, may be employedfor accelerating and retarding or reversing the discharge of the glassat the outlet.

Air or other fluid, preferably heated, is blown through apertures in thewalls of the cu and is exhausted from the cup through ot er apertures,in such a way as to maintain a protective fluid film or lining in thecup which serves to support the glass and keep it from direct contactwith the cup. Cups of various sha es may be used to shape the moldcharges as esired.

In the accompanying drawings:

Fig. 1 is a vertical transverse section of a glass feeding apparatusconstructed in accordance with my invention;

Fig. 2 is a vertical section taken through the halves of the collectingcup on line 2-2 of Fi 3; and

ig. 3 is a sectional plan view taken on line 3-3 of Fig. 2.

Referring to the drawings, the numeral 10 indicates a glass feedingreceptacle, which may be a forehearth connected to a glass meltingfurnace, and which has a submerged outlet 11 in its bottom through whicha stream 12 of molten glass is permitted to fiow. As shown, the How ofglass throughthe outlet 11 is constant, but it may be made intermittentby any desired means, as stated above.

An-implement 13 cooperates with the outlet 11 to control the flow ofglass therethrough and, as shown, is carried by an arm 14 which ismounted upon a guide rod 15. The implevment 13 may be adjustedvertically in order to regulate the low of glass through the outlet 11by means of a jack screw 16 which is threaded through the arm 14 andengages a plate 17. The screw`16 is provided with an operating crank 18.

The `glass 12 issuing from the outlet 11 is severed periodically, 1norder to separate it into mold charges of the desired size, by means ofa pair of coacting shear blades 19 whch are mounted beneath the outletand which may be actuated by any suitable means, not shown.

One of the molds 20 of a glass shaping machine is shown as being mountedupon `a table 21 and in a position directly beneath and in axialalignment with the outlet 11.

In order to accumulate the glass and impart a preliminary configurationto it before it is delivered to the mold, I provide a cup 22, preferablyhaving a cavity corresponding in general shape tothe contour of the moldcavity. This cup is formed in sections 23 which are mounted on arms 24for movement into and out of cooperative position above the mold and inaxial alignment with the outlet 11.

Each half or section 23 of the cup comprises a body portion'25 formedwith a recess 26 i and with a plurality of radially extending webs 27(Fig. 3) which are surrounded by a sus shell 28 to form a plurality ofchambers 29 between the webs 27.

Communication is established between the cavity 26 of each section andthe outer atmosphere through passages 30 formed in the webs 27 andcommunication between the ycavity and the chambers 29 is establishedthrough passages 31.

The chambers 29 of each section all communicate with an arcuate recess32 which is formed in the supporting arm 24 and which communicates inturn with a passage 33 ex tending longitudinally of the arm. Air underpressure, preferably heated, is supplied to the recess 32 from anysuitable source, not shown.

The air flowing into the cup through the passages 31, and escapingtherefrom to the atmosphere through the passages 30, forms a film of airdistributed upon'the interior walls of the cup, which resilientlysupports the mold charge and not only prevents it from contacting withthe Walls of the cup and sticking thereto but prevents an uneven chilledouter skin or enamel upon the glass. The thickness of this chilled skinmay be conrlolled by varying the temperature of the air It will beobserved that the air inlet passages 31 and the airoutlet passa es 30are disposed in close proximity to eac other so that the air enteringthe cavity will find an outlet adjacent to its point of entrance beforebuilding up sufficient pressure to dislodge or deform the mold charge inthe cup.

. As soon as sufiicient glass is received in the cup, it is severed fromthe stream, 12 by the shears. 19. The sections of the cup are Separated,either at the instant of severance or somewhat before or after thesevering time as may be desired, and the shaped mold charge is allowedto fall into the awaiting mold where it is Vsubjected to the necessaryshaping operations;

Heated air is ordinarilythe most convenient and suitable medium forproducing the protective fluid film in the cup. However, other gases maybe employed if desired, as well as water vapor and other vapors orliquids. i

It will be 4understood that the structural elements shown herein maybegvaried in proportion, arran ement and manner of use without departingfrom my invention as sc t forth in the appended claims.

It will also bel understood that the glass may be received in the cupeither before or after it is severed and may be released 'from Athe cupeither before or after it is severed.

The claims are intended to include the several ways of utilizing theinvention, irrespec- 'tive of the order in which the receiving,

severing and depositing steps are recited 1n the claims.

I claim as my invention:

1. The method of feeding molten glass that comprises receiving a mass ofglass in a fluid-lined cup, constantly adding fluid to and removin fluidfrom the lining of the cup at a plurality of spaced places on the innerwall of the cup, severing the glass in the cup from the glass from whichsaid mass has been derived, and depositing the said mass in a mold.

2. The method of shaping a mass of molten glass int'o a form a propriateto the contour of the mold in wliich said mass is to be fabricated, thatcomprises causing molten glass to issue downwardly from an o ening in acontainer, receiving the glass in a s aping cup, providing a layer offluid between the glass and the walls of the' cup, constantly supplyingfluid under pressure to and removing fluid from said la er 'at placesspaced along the inner walls o the cup so as to provide a condition ofstable equilibrium for the glass in the cup, severing the shaped glassfrom the parent body of glass, and deposlting the shaped mass in a mold.

3. The method of shaping a mass of molten glass into a form appropriateto the contour of the mold in which said mass is to be fabricated, thatcomprises causing molten glass toissue downwardly from an opening in acontainer, receiving the glass in a shaping cup, blowing aircontinuously into said cup and discharging air from said cup mainlythrou h the side walls of the cup so as to provi e a layer of airdistributed over the inner walls of said cup, thereby preventingl theglass in the cup from direct contact with the Walls of the cup, severingthe glass from the' parent body of glass, and depositing the said massin a mold.

- 4. The method of shaping a mass of molten glass into a formappropriate to the contour of the mold in which said mass is to befabricated, that comprises causing molten glass to issue downwardly froman opening in a container, receivin the glass in a partible shaping cup,provi ing a layer-offluid between the glass and the walls of the cup,constantly supplying fluid to and discharging fluid from said layer,mainly through the walls of said cup, severing the glass above the cup,and separating the parts of the cup to deposit the glass in a mold. l

5. The combination,'with a glass container havin an outlet, of a cup forintercepting glass issuing from said outlet and for imparting apreliminary configuration thereto suitable to the mold in which theglass is to be fabricated, and means for admitting and discharging fluidunder pressure toand from the interior of the cup at a plurality ofpoints along the length of the latter so as to interhaving an outlet, ofa cup for intercepting glass issuing from said outlet and for iinpartinga preliminary configuration thereto suitable to the mold in which theglass is to be fabricated', and means for interposing a fluid layerbetween the glass in said' cup and the Walls of said cup, said meanscomprising a plurality of distributed inlet and outlet passages formedin the walls of the cup for the admission and escape of fluid, whereby asuitable film' of fluid may be maintained between the cup and the glass.

7. Glass feedin cup composed o two cooperating halves adapted to receiveand shape charges of molten glass, and means for interposing a fluidlayer between the glass in said cup and the walls of said cup and forcontrolling the pressure of the layer on the glass in the cup so thatthe7 glass is given the configuration of the cup without distortion bythe fluid.

8. Glass feeding apparatus comprising a cup for receiving and shapingglass mold charges, the' inner walls of said cup being provided withopenings for the introduction of fluid and with other openings for thedischarge of fluid.

9. Glass feeding aparatus comprising a sectional cup lhaving inner wallsforming a cavity to receieve masses of molten glass, a

vplurality of Webs radiating outwardly from said inner walls, an outerwall' enclosing the inner wall of each section and forming, with saidwebs, a plurality of chambers, and means foi` admitting fluid into saidchambers, the

walls of said cup sections beinl provided with openings for admittingflui from said chambers to the interior of said cup, and the said websbeing'provided with openings for permitting fluid to escape from theinterior of said cup. iA

10. Glass working apparatus comprising a mold for use in fabricatingglass articles, a cup having a cavity adapted to impart to the glass aconfiguration approximatin the contour of the mold, means for suppyingwalls of said cup being provided with openings for the 4discharge offluid, whereby a film of fluid may be established along the walls of thecup cavity to prevent contact `of the glass with the walls of the cup,and

means for delivering glass to the cup and from the cup to the mold.

v its parent body.

11. The method of feeding molten glass which comprises flowing moltenglass into a cup, inter osing a thin film of fluid between the walls othe cup and the glass therewithinior supporting said glass in the cupwithapparatus comprising a 13. In glass feeding apparatus, a cup forVreceiving and shapin mold charges of molten glass, and means or causin aconstantly changing film of fluid in motion vfor spacing the glassI inthe cup from the inner walls of the cup without distortin the shape ofthe mass of glass in the cup, an so that the eX- tent of motion of thefluid of any portion of the film is relatively slight compared with thelength of the inner wall of the cup.

Signed at Hartford, Conn., this 30th. day

of October, 1925.

. KARL E. PEILER.l

l, fluid under pressure to the cup, the inner CERTIFICATE 0FCORRECTION.v

Patent No. 1,739,519. Granted December 17, 1929, to

KARL n. PEILER.

It is hereby certified that error appearsin the printed specification ofthe above numbered patent requiring correction as follows: Page 3, line35, claim 9, after the word "fluid" insert the words "under pressure";and that the said Letters Patent should be read with this correctiontherein that the same may conform to the record of the case in thePatent Office.

Signed and sealed this 14th day of January, A. D. 1930.

M. J. Moore,

. (Seal) Acting Commissioner of Patents.

